Heat oil in a pan and brown the skin-side of the chicken pieces. Set aside.
Add a little more oil to the pan, sauté the onions in oil until lightly golden. Add the chilli, ginger, garlic, cumin, coriander, Hinds Spices Turmeric, and Hinds Spices Mild & Spicy Curry Powder. Stir for 2 minutes then add the Rhodes Quality Chopped & Peeled Tomatoes. Simmer for 1 minute and return the chicken to the pan.
Add the chicken stock, potatoes and tomatoes and cook over a gentle heat for 1½ hours. Reduce sauce at the end to thicken, if necessary. Season with salt, pepper and sugar.